Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/735

Fixup for 12867e9f18.

This shouldn't have been caught in the `if`.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/734

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/734

Similar to 12867e9f18a3321217083, but for `matrix-coturn` (not
`matrix-nginx-proxy`).

Since the switch from `-v` to `--mount` (in 1fca917ad1),
we've regressed when `matrix_ssl_retrieval_method == 'none'`.

In such a case, we don't create `/matrix/ssl` directories at all
and shouldn't be trying to mount them into the `matrix-nginx-proxy`
container.

Previously, with `-v`, Docker would auto-create them, effectively hiding
our mistake. Now that `--mount` doesn't do such auto-creation magic,
the `matrix-nginx-proxy` container was failing to start.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/734

Complements https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/732

Note about the max length of the postgres password

Update configuring-playbook-bridge-matrix-bridge-sms.md

updates matrix-sms-bridge (changed SMS provider)

Continuation of 1fca917ad1.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/722

`-v` magically creates the source destination as a directory,
if it doesn't exist already. We'd like to avoid this magic
and the potential breakage that it might cause.

We'd rather fail while Docker tries to find things to `--mount`
than have it automatically create directories and fail anyway,
while having contaminated the filesystem.

There's a lot more `-v` instances remaining to be fixed later on.
This is just some start.

Things like `matrix_synapse_container_additional_volumes` and
`matrix_nginx_proxy_container_additional_volumes` were not changed to
use `--mount`, as options for each one are passed differently
(`ro` is `ro`, but `rw` doesn't exist and `slave` is `bind-propagation=slave`).
To avoid breaking people's custom volume mounts, we keep it as it is for now.

A deficiency with `--mount` is that it lacks the `z` option (SELinux
ownership changes), and some of our `-v` instances use that. I'm not
sure how supported SELinux is for us right now, but it might be,
and breaking that would not be a good idea.

Also switches to using `docker system prune -a` for a less invasive
cleanup of Docker images and related resources.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/727

Upgrade Element (1.7.13 -> 1.7.14)

Related to #724 (Github Pull Request)

synapse: update to 1.23.0

This reverts commit 078592454c
due to reports of breakage both in the support chat room
and in here https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/719

update mautrix-telegram to 0.9.0

updated matrix-sms-bridge image version

This is both for consistency with 93cc71cb69976c
and for making things more obvious.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/716

This patch makes us use more fully-qualified container image names
(either prefixed with docker.io/ or with localhost/).

The latter happens when self-building is enabled.

We've recently had issues where if an image was removed manually
and the service was restarted (making `docker run` fetch it from Docker Hub, etc.),
we'd end up with a pulled image, even though we're aiming for a self-built one.
Re-running the playbook would then not do a rebuild, because:
- the image with that name already exists (even though it's something
else)
- we sometimes had conditional logic where we'd build only if the git
repo changed

By explicitly changing the name of the images (prefixing with localhost/),
we avoid such confusion and the possibility that we'd automatically pul something
which is not what we expect.

Also, I've removed that condition where building would happen on git
changes only. We now always build (unless an image with that name
already exists). We just force-build when the git repo changes.

Update jitsi web to stable-5142

Changelog https://github.com/jitsi/jitsi-meet/releases/tag/stable%2Fjitsi-meet_5142

updated matrix-sms-bridge

Also, replace vague FIXME by a proper NOTE on the complete
story of the user_dir endpoints..

Regression since #681 (Github Pull Request).

Fixes #715 (Github Issue).

Related to #681 (Github Pull Request)